检索结果-南通市图书馆

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于最大最小蚁群系统的车载自组网路由策略

小型微型计算机系统 2024年第7期45卷 1749-1755页

作者：姚玉坤张关鑫刘旭冉韦亮重庆邮电大学通信与信息工程学院重庆400065

城市车载自组织网络中具有拓扑变化频繁,车辆分布不均匀等特性,因此如何选择下一跳车辆和确定最优传输路径是在复杂城市环境下设计高效路由协议的两个具有挑战性的问题.针对目前车载自组网中基于地理位置的算法具有下一跳车辆选取不合理... 详细信息

城市车载自组织网络中具有拓扑变化频繁,车辆分布不均匀等特性,因此如何选择下一跳车辆和确定最优传输路径是在复杂城市环境下设计高效路由协议的两个具有挑战性的问题.针对目前车载自组网中基于地理位置的算法具有下一跳车辆选取不合理,数据的传输路径缺少整体规划等问题,提出了一种基于最大最小蚁群系统的车载自组网路由策略.首先,采用基于分段连通度的最大最小蚁群探索机制进行路径探索.其次,采用基于接收节点驱动的转发机制优化数据包在车辆之间的多跳转发方式.仿真结果表明,与经典的基于地理位置的GPSR协议和基于GPSR协议改进的MM-GPSR算法相比较,本算法在数据包投递率和平均端到端时延方面均优于对比算法.

关键词：车载自组网最大最小蚁群系统分段连通度路径探索接收节点驱动

Fluoro-substituted DPP-bisthiophene conjugated polymer with azides in the side chains as ambipolar semiconductor and photoresist

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2022年第9期65卷 1791-1797页

作者： Wenlin Jiang Xiaobo Yu Cheng Li Xisha zhang guanxin zhang Zitong Liu Deqing zhang Beijing National Laboratory for Molecular Sciences Organic Solids LaboratoryInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Applied Organic Chemistry(SKLAOC) Key Laboratory of Special Function Materials and Structure DesignCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Photoresists are essential for the fabrication of flexible electronics through all-photolithographic *** component semiconducting photoresist exhibits both semiconducting and photo-patterning properties,and as a result,the device fabrication process can be ***,the design of semiconducting polymeric photoresist with ambipolar semiconducting property remains *** this paper,we report a single component semiconducting photoresist(PFDPPF4T-N_(3))by incorporating azide groups and noncovalent conformation locks into the side alkyl chains and conjugated backbones of a diketopyrrolopyrrole-based conjugated polymer,*** results reveal that PFDPP4FT-N_(3) exhibits ambipolar semiconducting property with hole and electron mobilities up to 1.12 and 1.17 cm^(2) V^(−1) s^(−1),***,field effect transistors with the individual photo-patterned thin films of PFDPP4FT-N_(3) also show ambipolar semiconducting behavior with hole and electron mobilities up to 0.66 and 0.80 cm^(2) V^(−1) s^(−1),*** results offer a simple yet effective design strategy for high-performance single component semiconducting photoresists,which hold great potential for flexible electronics processed by all-photolithography.

关键词： conjugated polymer ambipolar semiconductor photoresist noncovalent conformation lock diketopyrrolopyrrole

N-Aryl diketopyrrolopyrrole derivatives towards organic optical and electronic materials

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2023年第6期34卷 157-163页

作者： Jinqiu Meng Nan Luo guanxin zhang Xiangfeng Shao Zitong Liu Deqing zhang State Key Laboratory of Applied Organic Chemistry(SKLAOC) Key Laboratory of Special Function Materials and Structure DesignCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Diketopyrrolopyrrole(DPP)and related derivatives have drawn great attention due to their applications in organic optical/electronic *** in these materials is associated with developments in the syntheses of the DPP *** modification of DPP at nitrogen atom,including N-alkylation and N-arylation,is an effective strategy to improve its physical and chemical properties,such as solubility,optical and semiconducting ***,N-arylation of DPPs remains challenging compared to the easily accessible ***,the synthesis of N-aryl DPP derivatives and correlatedπ-expanded DPPs are summarized,and their optical/electronic properties are *** future perspectives of N-aryl DPP derivatives are also discussed.

关键词： Diketopyrrolopyrrole N-arylation π-expanded derivatives Organic optical material Organic electronic material

π-Extension of Isoindigos(IIDs)through C—H/N—H Activation and Alkyne Annulation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2023年第20期41卷 2589-2596页

作者： Kang Wang Liangliang Chen Yan-Ying Huang Liyuan Qin Cheng Li Xi-Sha zhang Feixian Luo Zheng Duan guanxin zhang Deqing zhang College of Chemistry Green Catalysis CenterZhengzhou UniversityZhengzhouHenan450000 China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Applied Organic Chemistry Lanzhou UniversityLanzhouGansu730000 China Key Laboratory of Ecology and Environment in Minority Areas Minzu University of ChinaNational Ethnic Affairs CommissionBeijing100081 China

Isoindigo(IID)is widely used as organic dye and conjugated unit in opto-electronic *** of IID to increase its structural complexity is demanding for obtaining diversity ***,we developed a direct C-H/N-H activation method of IIDs via double alkyne annulations and synthesizedπ-extended IIDs with two pairs of 5/7 membered *** structure of theπ-extended IIDs was characterized and confirmed by^(1)H NMR,^(13)C NMR,HRMS and X ray crystal *** physical properties were characterized by UV-vis absorption,cyclic voltammetry and thermogravimetric *** absorption coefficient of the annulated products enhanced significantly compared with the non-annulated analogue.

关键词： Isoindigo C-H N-H activation Alkyne annulation Opto-electronic function Synthetic methods Functionalized Units

Organic nanoparticles formed by aggregation-induced fluorescent molecules for detection of hydrogen sulfide in living cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2016年第1期59卷 106-113页

作者： Yi zhang Xianhong Huang Wenwen Liu guanxin zhang Deqing zhang Xingyu Jiang Beijing Engineering Research Center for BioNanotechnology&Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology Beijing 100190China Beijing National Laboratory for Molecular Science Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of SciencesBeijing 100190China

Hydrogen sulfide(H_2S)has been found to be the third most important endogenous gaseous signaling molecule after nitric oxide(NO)and carbonic oxide(CO)and plays crucial roles in living organisms and biological *** we use aggregation-induced emission(AIE)of a small organic molecule(TPE-indo)to detect H_2S in both solution and living ***-indo can target mitochondria and aggregate to fluoresce,which can serve as a sensor for monitoring H_2S in the *** regulate the fluorescence of AIE molecules by tuning the viscosity of the solution to form TPE-indo nanoparticles,constructing a probe for H_2S with good selectivity and high *** nucleophilic addition of HS-to the TPE-indo is crucial for the rapid H_2S *** imaging and analysis of H_2S in mitochondria of living cells with the probe demonstrate potential biological applications.

关键词：有机纳米粒子荧光分子内检测硫化氢诱导聚集活细胞气体信号分子

Tetrathiafulvalene (TTF)-based gelators:Stimuli responsive gels and conducting nanostructures

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2011年第4期54卷 596-602页

作者： YANG XingYuan zhang DeQing zhang guanxin ZHU DaoBen 1Beijing National Laboratory for Molecular Sciences Organic Solids LaboratoryInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Graduate University of Chinese Academy of Sciences Beijing 100049China

Tetrathiafulvalene (TTF) and its derivatives have been intensively investigated for conducting materials for more than 30 *** π-electron donors,TTF and its derivatives can be reversibly transformed into the respective TTF.+ and TTF2+.Due to its reversible feature,the TTF unit has been widely employed as the building block for switchable *** recent years studies of conducting nanostructures of TTF derivatives have received more and more *** simple way to prepare nano-structures is through the gelation *** this review,we have discussed recent progress in stimuli-responsive gels and conducting nanostructures based on TTF-based gelators.

关键词：转录因子纳米结构凝胶剂刺激反应基础纳米材料凝胶化过程切换系统

Tuning the solid-state emission of the analogous GFP chromophore by varying alkyl chains in the imidazolinone ring

在线全文

学校读者我要写书评

暂无评论

中国科学：化学英文版 2013年第9期56卷 1197-1203页

作者： SHEN Xiang HUANG GuangXi LI Kan zhang guanxin zhang DeQing Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Sciences

New analogues of green fluorescent protein (GFP) chromophore mGFP-Cn (n = 1, 3, 5, 11) with alkyl chains of different lengths in the imidazolinone rings were synthesized and their crystal structures were determined. These GFP-like chromophores are all emissive in the solid state. And the solid-state emission quantum yields of increase by extending the lengths of alkyl chains, owing to the fact that the intermolecular pi-pi interactions are significantly weakened based on their crystal structures.

关键词：固态发射咪唑啉酮生色团 GFP 烷基链类似物 π-π相互作用调谐

Colorimetric detection of glucose and an assay for acetylcholinesterase with amine-terminated polydiacetylene vesicles

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2011年第18期56卷 1877-1883页

作者： XUE WangXin zhang DeQing zhang guanxin ZHU DaoBen Beijing National Laboratory for Molecular Sciences Organic Solids Laboratoo Institute of Chemistry Chinese Academy of Sciences Beijing100190 China

终止胺的 polydiacetylene (PDA ) 的比色的反应泡被改变答案的 pH 开始表明。检测葡萄糖和 acetylcholinesterase (疼痛) 活动的方便比色的方法被利用下列特征成功地用终止胺的 PDA 泡建立：(1 ) 终止胺的 PDA 泡作为答案变化的 pH 经... 详细信息

终止胺的 polydiacetylene (PDA ) 的比色的反应泡被改变答案的 pH 开始表明。检测葡萄糖和 acetylcholinesterase (疼痛) 活动的方便比色的方法被利用下列特征成功地用终止胺的 PDA 泡建立：(1 ) 终止胺的 PDA 泡作为答案变化的 pH 经历比色的转变；(2 ) 葡萄糖能面对葡萄糖 oxidase 被氧化到 gluconic 酸；并且(3 ) 疼痛催化醋胆素的水解作用到醋酸。葡萄糖层次和疼痛活动的视觉察觉显示出好选择和可接受的敏感。葡萄糖的察觉限制是 2.5 mol/L，疼痛活动的水平是象 10.0 mU/mL 一样低的 assayed。而且，终止胺的 PDA 泡能被用于屏蔽禁止者的活动对疼痛。

关键词：乙酰胆碱酯酶葡萄糖胺视觉检测比色法酶测定囊泡聚二乙炔 AChE活性

π-Extented Conjugated Polymers Entailing Pechmann Dye Moieties for Solution-Processed Ambipolar Organic Semiconductors

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2014年第8期32卷 788-796页

作者： Zhengxu Cai Zitong Liu Hewei Luo Penglin Qi guanxin zhang Deqing zhang 不详 Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

In this paper,we report the design,synthesis and semiconducting behavior of two conjugated D-A polymers BPDDTE and BPDBDTE which entail BPD,a Pechmann dye framework,as electron accepting moieties and(E)-1,2-di(thiophen-2-yl)ethane with and without alkyl chains as electron donating *** both show very narrow bandgaps below 1.3 *** on the characterization of the field-effect transistors,thin film of BPDDT exhibits ambipolar semiconducting properties with hole and electron mobilities reaching 0.245 and 0.095 cm^(2)•V^(−1)•s^(−1),respectively,after thermal ***,BPDBDTE with more alkylchains shows ambipolar semiconducting behavior with hole mobility and electron mobilities reaching 0.109 and 0.081 cm^(2)•V^(−1)•s^(−1).Furthermore,BPDBDTE shows good solubilities in several common organic solvents and thus is easily ***,BPDBDTE is potentially processible with inkjet printing and roll-to-roll printing techniques.

关键词： Pechmann dye conjugated polymer field-effect transistor ambipolar behavior